5 clubs Cristiano Ronaldo has scored the most goals against in the UEFA Champions League

The UEFA Champions League is Cristiano Ronaldo's world and everyone's just living in it.

Over the years, he's made it a habit to preserve his best performances for those big European nights, giving us numerous incredible moments.

He's the all-time top scorer in the competition with 135 goals and is now the highest appearance-maker too after his 178th cap last night, surpassing his former teammate Iker Casillas.

This is only the tip of the iceberg, as the Portuguese ace boasts several other records in the premier European club competition.

Many big teams have tried to keep him at bay and failed, for his prowess in front of goal has been too hot for many teams to handle.

In this list, we'll look at the top five of Ronaldo's biggest victims in the Champions League in terms of goals scored:

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#5 Borussia Dortmund - 7 goals (9 games)

Dortmund have had little success in keeping out Ronaldo

Borussia Dortmund's renaissance under Jurgen Klopp saw them become a fixture in the Champions League again, and one side they often came up against was Real Madrid.

Between 2012 and 2017, they clashed 10 times, with Ronaldo playing in nine of those fixtures and bagging seven goals, the most Dortmund have conceded to a single player in European games.

He was on target during their first meeting in 2012, a 2-1 defeat for Los Blancos at the Signal Iduna Park in the group stages, and in both legs of his last in 2016 in the same round.

Ronaldo boasts an excellent record against German sides, and we've merely skimmed the surface here. If you find his Dortmund stats impressive, then read on for more.

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#4 Schalke - 7 goals (4 games)

Ronaldo has scored in all four appearances against Schalke

The Portuguese ace has scored the same number of goals against Schalke as he's scored against Dortmund, but in less than half the number of games - how about them apples!

When the sides met for the first time in the last-16 of the 2013/14 season, Los Blancos won 9-2 on aggregate, with Ronaldo alone accounting for four goals (a brace in each game).

Then the following year, the pair were drawn together at the same stage once again, with Madrid, now the defending champions, narrowly edging them out following a stunning 4-3 loss at home.

This time, the prolific number seven bagged three, including another double at the Santiago Bernabeu, by which point the Royal Blues must have been sick of his sight.

#3 Bayern Munich - 9 goals (8 games)

Ronaldo floored Bayern in 2017 with five goals over two legs!

A third consecutive German side on the list, Bayern Munich are Ronaldo's favorite Bundesliga team, having scored a staggering nine goals from just eight games against them.

What's also interesting is that he's scored them in multiples - a brace on three occasions along with a hat-trick - making the Bavarians look like an ordinary side.

His best, though, came in their quarter-final clash of the 2016/17 season, when he scored five goals over two legs, a double at the Allianz Arena followed by a treble at the Bernabeu.

To an extent, the Bavarians can claim to have salvaged some pride by shutting him out in both semi-final legs the following year, although Los Blancos once again prevailed on aggregate.

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#2 Ajax - 9 goals (7 games)

Ronaldo has been a thorn in Ajax's face

Our last memory of Ronaldo playing Ajax was in the 2018/19 season when the Dutch side knocked his Juventus out in the quarter-finals, but he's come up against them several times in the past.

Failing to fire in only his first game, the Portuguese ace scored consecutively in his next six appearances, including a hat-trick in Amsterdam in 2012, his first in the competition.

He'd never lost (or even drawn) to the Lancers until his meeting with them in the Bianconeri colors just over two years ago, as the Serie A giants failed to win in both legs despite Ronaldo scoring.

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#1 Juventus - 10 goals (7 games)

Ronaldo's greatest strike came against Juventus in the Champions League

Ironically, Ronaldo's best record in the Champions League has come against his former side, Juventus, with him scoring 10 goals in seven games, the most a player has managed versus a single opposition in the competition.

What's also interesting is that the Portuguese ace has scored in every single appearance against the Bianconeri, including in the 2017 finals where his brace secured a stunning 4-1 win.

But his best moment was undoubtedly the spectacular overhead kick during Real Madrid's clash with Juventus in the quarter-finals of the 2017/18 season, that elicited a standing ovation from the Bianconeri faithful.

According to Ronaldo himself, it was that moment which inspired him to move to Turin later that summer.

But having now left the club three years later, there's always a chance that he could come against them some time in the Champions League and extend his unbelievable record.